Stove



D. ARANGO STOVE Filed Dec. 15,. 1920 2 Sheets-Sheet, l

July 7. 1925.

D. ARANGO STOVE Filed Dec. 15. 1920 2 Sheets-Sheet 2 Patented July 7, 1925.

UNITED STATES DAV-ID ARANGO, on HABANA, CUBA.A

n 1,544,624 PATENT OFFICE..

s'rovn. y

'Application inea December v15, 1,920. serial No. 430,935.

To all whom t may concern.'

Be it known that I, DAVID ARANGO, `a subject of the King of Spain, and resident of Habana, Cuba (whose post-office address is .#121 Neptuno Street, Habana, Cuba),.have invented certain newV and. useful Improvements in Stoves, of which the following is a specification.

This invention relates to improvements in stoves for drying materials. and more particularly .to a stove for cane bagasse .and its main object is to provide an apparatus for Vdryingthe sugar-cane bagasse as Vit comes from the sugar-canemills, before using the same vas va fuel for the furnaces ofthe steam boilers 4inthesugar-"cane mills.. p

An object of the invention is to providean apparatus so constructed as'to be capable of wholly drying within the same the moist bagasse within a relatively short time.

Another object of the invention is to provide the apparatus with means for automatically Ataking outy therefrom the ydried bagasse ready for being iused as a fuel.

A furtherrobject is to provide means to permit a continuous andcomplete agitation of the mass of bagasse during the drying operation.

A still further object of the invention is to provide an improved construction of the apparatus whereby the hot. gases of the combustion will `not be led directly to the chimney butcaused to follow a longer course and thereby exert a slower and more eilicient action on the moist bagasse.

The invention is described fwith reference to the figures of the annexed drawings, in which: Y

Fig. 1 is an upper plan view of the stove.

Fig. 2 is a vertical cross section on 4line 2-2 of Fig. 1., y

Fig. 3 is an end elevation of the apparatus forming the subject matter of this invention.

Fig. l vis a vertical cross sectionfon line H of Figs. 1 and 6.

. Fig. 5 is a vertical cross 5-5 of Fig. 1.

. Fig. 6 is a side elevation of said apparatus.

Fig. 17 is a longitudinal vertical section section on line on line 7-7 of Fig. 1.

The stoveforming the subject matter of this invent-ion is .of elongated shape. and rectangular section, and its walls and floor are made of refractory brick.' In the front wall 1 of the stove is provided an upper vwhich Yopens from vand* Von the .rear wall 1 is provided a'lower registering opening 4 the lower side of l drying the sugar- Y `run of said endless belt bears on of supporting and on bearings 24 arranged outlet 2 having a counterweighted door 3 the inside to the outside which is level with floor 1 of the stove, The roof2 of the stove forms a plane arch provided with separated registering opento be dried, this opening being-provided with a hopper 7 provided with a Vcounterweighted valve 7 f whichopens fromoutside to inside. In the side walls of the stove are provided the openings and registering doors 8 and 9 to facilitate inspection and cleansing thereof. On the roof 2 of the stove is a cover 10 which communicates through a horizontal tubular conduit 10 with a chimney 10"? loca-ted at the eX- terior of the stovev vand designed for eX- pelling the combustion gases and .the water vapor of ythe moistened bagasse when the same dries out. On the sides ofthe stove there are exteriorly arranged supporting frames 11 and 12.011 whose ends are provided bearings on which are mounted horizontal` shafts 13 and 1A through the body of the stove, there being arranged on .each end ofeach one Aof these shafts, inside of the stove, sprocket wheels 15 and 16 on which runs a metal endless belt 17 ina longitudinal direction with respectto the stove and-inside thereof and opposlte the outlet 2. The upper a plurality guiding rollers 18 mounted on shafts 19 transversely and horizontally lto the stove land very closetoone ano-ther which rotate on bearings the intermediate beams 21 of each frame 11 and 12, and at its lower part the belt runs on supporting and guiding rollers 22which are mounted on horizontal shafts 23.1'otatory on thelower beams 25 of each one of the said frames 11 and 12, whereby, as clearly illustrated in Fig. 7 of the drawings, half and bearsand runs loosely at its lower half upon the rollers 22. y Slow motion is imparted to thebelt 17 by means of a sprocket wheel 26 ,secured to the shaft 13, which in turn receives the motion ythrough a Vchain gearing from another wheel 27 of a convenient power source designated in .the drawings by'theletter W.

A horizontal partition divides the stove into two compartments, an upper one 28 and a lower one 29, this partition being located 20 arranged on Y thebelt 17 is .tense at its upper` @ings 5 and an opening 6 for the inletof the moistened bagasse "6,5

between the two series of shafts 14e and 15 and leaving at its ends free spaces 31 and 32 for communication between the upper and lower compartments, the main object of saidstructed of any suitable material, such as vlongitudinal with respect to the stove.

metal plates.

On the upper beam Q1 of the outer frame 11 are secured brackets 311 having bearings on which rotate a long horizontal shaft 35 On said shaft, and separated from each other, are arranged the bevel gear wheels 36 meshing at right angle with bevel gear wheels 37 fixed on the corresponding ends of a plu rality of horizontal shafts 38 transversely to the stove independent from each other and separated apart, which are mounted on bearings 39 disposed on the upper beams 33 of each supporting frame 10 and 11. On the said shafts 38 are arranged agitating blades l0 which operate in the manner that will be hereinafter explained. The long shaft 35 receives a rotary motion from a wheel 136 secured on one of its ends which receives motion through the wheel 137 and endless belt or chain 138 from the engine system l/V. The lower compartment 29 of the stove communicates through a passage Al1, whose inner walls are made of refrac-` tory brick, with the fire box 4:2 of a furnace located in an excavation 44 to which access is had through a ladder A5, said furnace being provided at its upper part with a hopper 46 for feeding it with fuel in the event the same is of dry bagasse. 47 and 18, designate respectively the {ire-box door, and the door of the ash-pit. The furnace is designated 50.

The operation of this stove is as follows: After feeding the inoistened bagasse from the hopper 7 through the countei'weighted lock 7 this material falls on the upper part of the metal belt 17 which is constantly advancing upon the wheels 15 and 16 and in the meantime the agitating blades l() fixed on the shafts 38 will keep a constant agitation of the layer of moistened bagasse traveling with the belt. The combustion gases from the furnace 43 will have access from the same through'the passage L11 to the lower compartment 29 of the stove and will travel throughout said compartment in the direction indicated by the arrows in Fig. 7, passing to the compartment 28 through the open Space 31, and exert its action therein on the bagasse upon the belt 17, and then travels to the chimney 10v from the conduit 10',

direct to the chimney 10" ient manner for its subsequent treatment.

The registering doors indicated with numerals l, 5, 8 and 9 provide means for a proper cleansing and inspection of the stove.

Having thus describediny invention and the manner in which the same is carried out, what I desire to protect by Letters Patent is all that which may fall within the scope of the appended claims.

What claim is 1. A stove for drying materials on an endless longitudinally traveling belt ar ranged in the stove, the latter having an opening for feeding upon the belt the material to be dried; means for creating a continued agitation of the layer of material upon the belt; heating means in communication with the stove; means for causing the hot gases of the combustion to move in the interior of the stove therein first from the fro'nt to the rear and then from the rear to the front; and means for discharging the gases of the combustion and the water vapor expelled from the material.

2. A stove for drying materials constructed of refractory material provided at its interior with a traveling metal endless belt longitudinally arranged; means for imparting a slow motion to said belt; closely spaced rolls for maintaining tense the upper half of the belt, and rolls widely spaced apart for maintaining loose the lower half of the belt; said stove having an opening on the upper rim part for feeding the material to be dried upon the belt and also having registering openings; an outlet in the front part opposite the belt and provided with a countei'weighted door, a horizontal partition dividing the sto-ve in two compartments upper and lower leaving end openings connecting both compartments; heating means in communication with the lower compartment of the stove; means for discharging out of the stove the combustion gases and water vapor expelled from the materials to be dried; and a plurality of agitating `elements arranged above the belt for maintaining a continued agitation to the layer of material upon the belt, and means forimparting rotatory motion to said agitating members.

3. A stove for drying materials constructed on its exterior of refractory material; a metal endless belt mounted inside of the stove on sprocket wheels arranged on horizontal shafts near the ends of the stove;

llO

' versely to the stove and separated at a longer distance which are also provided with rollers on which bears the lower half of the belt; said stove having an opening provided with a hopper with counterweiglited door on the upper part of the roof adapted to feed onto the belt the material to be dried in the stove; and also having openings on the roof for the inspection and cleansing of the stove; an outlet the front wall of the roof in level with the belt, provided with a counterweighted door which opens from inside to outside a horizontal partition dividing the stove into upper and lower compart ments, substantiall equal, leaving end openings connecting the two compartments; a furnace whose fire-box is in communication with the lower .compartment or" the stove;

a chimney in communication with the upper compartment of the stove for discharging the combustion gases and water vapor eX- pelled from the material when drying out; a plurality of horizontal shafts mounted above the endless belt and provided with blades adapted Vto maintain a continued agitation of the massv of material on the belt and means for imparting a rotatory motion to each one of said shafts. v

vIn witness whereof I affix my signature.

DAVID ARANGO.

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